Excel Age Formula from Date of Birth
Age calculations are easy to get slightly wrong if you only divide days by 365. Excel has a cleaner way to count full years from a date of birth. This guide shows the DATEDIF formula with a simple member list.
Formula Syntax
Use this base syntax for excel age formula from date of birth and replace the ranges with your own spreadsheet columns.
DATEDIF(birth_date, TODAY(), "Y")Need this formula for your exact sheet?
Generate a custom excel age formula from date of birth formula with your own columns, criteria, and spreadsheet layout.
Step-by-step Example
A billing automation spreadsheet tracks Member age calculation and needs a formula-driven result instead of manual filtering.
| Name | Date of Birth |
|---|---|
| Iris | 1994-02-12 |
| Jon | 1988-11-03 |
| Kai | 2001-06-25 |
Resulting formula
=DATEDIF(B2,TODAY(),"Y")The formula evaluates the Member age calculation rows and returns Age in years. Replace the sample ranges with your actual columns, then adjust the criteria so the result matches your workbook.
Try It Now
The generator is pre-filled for excel age formula from date of birth. Edit the prompt to match your columns, criteria, and spreadsheet layout.
Generated formula
How it works
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Common Variations
- Age in years
- Age in years and months
- Age on a specific date
FAQ
How do I set up Excel Age Formula from Date of Birth for Member age calculation?
Map the sample columns to your own sheet first, then replace the formula ranges with the real ranges from your workbook. Keep text criteria in quotes and verify that date or number columns are stored as real values.
Can this formula handle age in years?
Yes. Use the same formula pattern and change the criteria, helper column, or lookup value for age in years. If the logic becomes more complex, generate a custom version with the free tool.
What should I check if the Excel Age Formula from Date of Birth result is wrong?
Check that every referenced range covers the same rows, locked references use dollar signs where needed, and the criteria type matches the data. For this page, also confirm that the Member age calculation fields are formatted consistently.